Success! No, not with finding out anything about the vase but cleaning the Magic Marker off the porous bottom of it... a victory in itself!
So what worked? Well, after trying a lot of things with limited success as I explained in a previous post, what finally worked for me was bleach and 6-12! You may be asking yourself, what is 6-12? It's insect repellent, I dug it out from the back of a closet where it was placed many years ago! I'm not even sure if they still make it but you can probably find it on ebay like almost everything else. I tried other insect repellents like Cutter, but they didn't do the trick.
Ahhh, the days of good old 6-12, sitting by the camp fire roasting marsh mellows and camping with your 6-12 on. Fishing while standing in a thicket of weeds and cattails next to a pond that smelled like a marsh, sinking up to your knees in mud while the crickets chirped and bullfrogs bellowed. Laying in the sand on a beach on a calm hot summer day, listening to the waves pound the shore while the sea gulls laughed away. Good old 6-12, that's what I remember it was used for (day dream ends here...). Sorry, got carried away a bit, brought back some memories.
Anyways, if you've managed to last through my rant and read this far here's what I did to remove the Magic Marker from the bottom of the vase (visuals of after and before included below).
I dipped a cotton swab into the 6-12 Insect Repellent bottle and applied it to the magic marker mark totally saturating the marked area only and let it stand for about 1 minute. This 6-12 Insect Repellent is in liquid form (2 Fluid Ounce Bottle) and is non-flammable. I then took a peice of a cotton cloth and soaked up the fluid and most of the magic marker which had solidified into it. The next thing I did was fill a bottle cap half full of bleach and using a fine bristled tooth brush I dipped the brush into the cap and applied some bleach to the remaining magic marker mark and let it set for about 1 minute. Then I scrubbed the mark and placed the vase bottom under running tap water for another minute while scrubbing it at the same time. I then completely dried the vase and repeated the above steps 2 more times. That's it, the vase seems to have no trace of the magic marker now.
* Standard Disclaimer: Your results may vary. Use at your own risk. I'm not responsible for any damages caused while implementing this procedure or any variation of it.
Kevin